Here you will find all the symbols used used by us in this knowledge base. Please note, that other publications might use different symbols for the same parameters.
[A] | concentration of A |
ßanodic | Tafel slope for oxidation |
ßcathodic | Tafel slope for cathodic |
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derivative of x with respect to y |
ε0 | electric field constant |
εr | relative permittivity |
Φ | phase shift |
𝜙 | CPE parameter: 0 Resistor, 1 Capacitor |
τ | time constant of a capacitor (τ = RC) |
a | activity |
aOx | activity of the oxidized species |
aRed | activity of the reduced species |
A | area |
c | concentration |
cb | bulk conentration |
cOx | concentration of the oxidized species |
cRed | concentration of the reduced species |
C | capacity |
CC | coating capacity |
Cdl | double layer capacity |
CE | counter electrode |
d | distance |
E | potential |
E0 | standard potential |
E0’ | formal potential |
EC | charging potential applied to a capacitor |
Ecorr | corrosion potential |
Epp | primary passivation potential |
Estep | step potential during DPV and SWV |
ET | transmission potential for passivation film |
fOx | activity coefficient of the oxidized species |
fRed | activity coefficient of the reduced species |
F | faraday constant |
I | electric current |
I0 | current at t = 0 |
Icap | capacitive charging current |
Icorr | corrosion current |
Icrit | critical passivation current |
Ipas | passive current / current for passivated material |
k | reaction rate |
KL | solubility product |
n | amount of substance / order of reaction |
Ox | an oxidized species |
Q | charge |
r | reaction rate |
R | resistance or universal gas constant |
Rpor | pore resistance |
Rsol | Solution resistance |
RU | uncompensated resitance |
RE | reference electrode |
Red | a reduced species |
t | time |
tinterval | time between two point of measurement |
T | temperature |
U | voltage |
v | scan rate |
vs | versus |
WE | working electrode |
z | electrons transferred per molecule |
Z | impedance |
ZCPE | impedance of the CPE |
ZW | Warburg impedance |
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